Improvement in magazines for coal-stoves



LP. RICHARDSON.

Magazine fo-r Gual-Stoves.'

N0. 166 144. -Patentedlly 27,1875.

' lgn @.Qww. N im,

' N.PErF.Rs. FuomuTHoumPuaR. WASHINGTON D C NITED STATES vPi-rrnrvaA Ormeao JAMES P. RICHARDSON, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN MAeAziNEs FOR coAL-sTovEs.

Spehication forming partof Letters Patent No. 166,144., dated July 27, 1875; Vapplication tiled June 1l, 1875.

To all whom vit-may concern.-

Be it known that I, J AMES P. RICHARDSON, of Washington, in the District of Columbia, have invented certain new and useful Improvements in Magazine for Coal Stoves, of which the following is a specification.

This invention relates to ycertain improve-- ments in that class of base-burning stoves in which the magazine is made in sections telescoped together in such manner that the lower section may be raised or lowered so as to increase or diminish the distance of the same from the mouth of the {ire-pot, and thus regulate the amount of fuel consumed.

The magazine-stoves have heretofore been constructed with a `zigzag slot cut through the outer wall of the lower section of the magazine, through which projects a pin, secured to the inside cylinder, for holding the said section in anydesired position, or with a spira-l ridge on the outside of the upper section, and a corresponding ridge on the interior of the lower section, the two operating to gether after the manner of a screw. The zigzag slot and` pin have proved objectionable from the fact that the cylinder has to .be bodily lifted, step by step, in elevating the lower section. Besides the great exertion necessary to thus bodily lift the section, if the same is lifted from one side only-which must necessarily be the case in'stoves as ordinarily constructed, with openings on one sidethe inner cylinder is liable to be thrown out of line and bind in the outerA cylinder, defying all attempts to elevate it; and where special provision is made for raising the cylinder on both sides at the same time, it' will require the services of two persons to elevate the Where spiral ridges are employed, gearing together after the manner of a screw, in order to hold the lower cylinder and prevent it from dropping, the inclination or pitch of the ridges must necessarily be very gradual, and in order to secure any practicable vertical play to said cylinder, have to be extended several times around the same, making several entire rotations of the same, necessary in order to elevate said lower cylinder to its full height, requiring an inconvenient amount of time and exertion.

My invention is designed to obviate these defects; and it consists in a magazine constructed of two concentric tubes of suitable diameter and length, one adapted to slide within the other, the outer tube having a spiral slot through its walls,` the upper side of said slot being serratedor toothed, forming a series of stops along the length of the outer cylinder adapted to engage upon a stud upon the inner cylinder, in such manner that one cylinder can be let in or out of the other and the two fastened in any convenient position, as will be fully hereinafter set forth.

-In the drawing, Figure l represents an elevation of my improved magazine. Fig. 2 represents detached views of the telescopic sections of the same.

The letters A and B represent the two concentric cylinders arranged to telescope together, the outer cylinder A sliding freely upon the inner cylinder B. The inner cylinder B, which forms the upper part of the magazine, is secured in` any convenient manner within the upper part ot' the stove in the same position as the upper part of an ordinary magazine, the cylinder A, fitting on said cyl? inder B, forming the lower section of the magazine, the lower edge of the same being constructed with openings around its circumference similar to those around the lower edge ofthe ordinary magazine of base-burnin g stoves. The mouth or lower edge of said outer cylinder maybe made flaring or contracted, as usual, to suit the style of fire-pot employed in the various stoves, asmay be found convenient. Through the walls of the outer cylinder is formed a spiral slot, C, of any desired length. The upper side of said slot is serrated or provided with a series of teeth, D, which form at different heights along the length of the cylinder' a series of stops, which are adapted to engage over a pin, E, secured to the lower end ofthe inner cylinder and securely fasten the outer cylinder in any posit-ion to which it may be adjusted. [n order that the adjustment of the outer cylinder may be readily effected, the teeth c are peculiarly constructed,`one side of each tooth being formed of such shape as to vbe, nearly parallel with the lower edge of the spiral slot which engages the stud or pin ou the inner cylinder, and is formed on aline parallel, or nearly parallel, with a plane through the cylinder at rightangles to its axis. It will be seen that, as thus constructed, the teeth may be readily disengaged from the pin on the inner cylinder by simply rotating the outer cylinder. When the teeth are thus disengaged, it is an easy matter to adj ust the outer cylinder to any desired position, with respect to the lire-pot, by means of a simple lever or poker, by elevating or lowering the said cylinder until the pin comes opposite the desired tooth, and then turning it so as to bring the tooth in place over the pin. By this means an efficient and Vsimple 'device' for lockingthe outer cylinder in position is provided, by means of which said cylinder may be readily and conveniently adjusted While the stove is in operation, without the necessity of allowing the fire to die out, as is required in all magazines of this class as hitherto constructed.

It is evident that the device may be modified by attaching the outer tube to the upper Vsubstantially.as described. t

part of the stove, lthe inner tube forming the movable sect-ion and lower part of the magazine, Without departing from my invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

The telescopic magazine for base-burning stoves, consisting of concentric tubes adapted to slide one Within the other, the outer one provided With a spiral slot, one side ot' which is serrated or formed with teeth' to engage and hold over a pin on the innerl tube and lock the lower tube in any desired position,

In testimony that I claim the foregoing I have hereunto set my hand in the presence ot' the subscribing Witnesses.

J. P. RICHARDSON, M. D.

Witnesses:

J No. D. PATTEN, ALBERT H. NoRRIs. 

